bluealsa is run as root:root but checkpath in /etc/init.d/bluealsa sets the access mode to 0700. checkpath -q -D -m 0700 -o :audio /var/run/bluealsa This prevents members of the audio group from creating a socket in the /var/run/bluealsa directory when connecting to A2DP devices. The access mode check should be 0750 or 0770. In my case it worked with 0750.
commit 0dcd4b29f28560dc1edc953ac22f764adf4a005e Author: Lars Wendler <polynomial-c@gentoo.org> Date: Wed Oct 19 14:48:00 2016 media-sound/bluez-alsa: Revbump to fix access to /var/run/bluezalsa This fixes Gentoo bug #597526. Added "hcitop" USE flag to live ebuild and adjust dependencies accordingly. Thanks to Aleksei Timofeyev for reporting this via e-mail. Package-Manager: portage-2.3.2 Signed-off-by: Lars Wendler <polynomial-c@gentoo.org>